206661126151 has 4 divisors (see below), whose sum is σ = 206673522952. Its totient is φ = 206648729352.

The previous prime is 206661126121. The next prime is 206661126209. The reversal of 206661126151 is 151621166602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206661126151 - 2¹⁵ = 206661093383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206661126151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206661126121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6173361 + ... + 6206746.

It is an arithmetic number, because the mean of its divisors is an integer number (51668380738).

Almost surely, 2^206661126151 is an apocalyptic number.

206661126151 is a deficient number, since it is larger than the sum of its proper divisors (12396801).

206661126151 is a wasteful number, since it uses less digits than its factorization.

206661126151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12396800.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 206661126151 in words is "two hundred six billion, six hundred sixty-one million, one hundred twenty-six thousand, one hundred fifty-one".